Spark-arrester.



R. LAMB. SPARK ARRESTER.

APPLICATION FILED T11R28. 1907. 7

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PATENTED SEPT. 3, 1907.

RICHARD LAMB, OF LAWRENCE, MASSACHUSETTS.

SPARK-ARRESTER.

Specification of Letters Patent.

Patented Sept. 3, 1907.

Application filed February 28, 1907- Serial No. 359,755.

To all whom it may concern:

Be it known that I, RICHARD LAMB, a citizen of the United States,residing at Lawrence, in the county of Essex and State of Massachusetts,have invented new and useful Improvements in Spark-Arresters, of whichthe following is a specification.

This invention relates to spark arresters of the type employed on theupper ends of smoke stacks or other fines for arresting the heatedparticles of fuel which pass off with the smoke and other products ofcombustion, and has for its objects to provide a comparatively simple,inexpensive device of this character which may be readily applied foruse, one whereby the sparks will be effectually caught and precipitatedinto'the receptacle or drum, and one wherein said drum may be readilycleaned when circumstances require.

With these and other objects in view, the invention comprises the novelfeatures of construction and combination of parts as will be hereinafterdescribed.

In the accompanying drawings, Figure 1 is a vertical longitudinalsection through the upper portion ofaflue equipped with a spark arresterembodying the invention. Fig. 2 is a reverse plan view of the devicepartly in section, the section being taken on the line 2-2 of Fig. 1.

Referring to the drawings, 1 designates a smoke stack or flue whichprojects at its upper end centrally into a hollow drum or casing 2provided at intervals around the central flue receiving opening withupstanding arms 3 having at their upper ends overturned engagingportions or hooks 4 adapted to seat over the upper end of the flue forsupporting the drum in place thereon, the

' drum being further sustained in position on the flue member consistingof a hood or screen 9 composed of wire fabric, as shown, and having itslower edge secured between a pair of stiffening rings or bands 1.0, 11,of which the latter is removably fitted on that portion of the fluewithin the drum, while applied over the upper end of the latter is a topcover, comprising a screen formed by a sheet 12 of wire gauze or otheropenwork fabric engaged at its edge between a pair of sheet metalstiffening hoops or bands 13, 14:, combining to form a rim, which fitsremovably on the drum; the top cover being secured in place by means ofa fastening member or bolt 15 entered through suitable openings orperforations formed in the rim and drum and having at one end a head 16and tapped on its other end a nut 17. It is to be observed in thisconnection that the screen fabric 12 is of finer texture than thatcomposing the shield 9.

Formed in the bottom of the drum 2 is a discharge opening 18 normallyclosed by means of a door 19 connected at one end to the drum by meansof hinges 20 and engaged at its other end by a pivoted latch button 21for holding the door in closed position.

In practice, the heated particles of fuel which pass upward through theflue 1 with the smoke and other products of combustion, will come incontact with the hood or screen 9, and such particles as are too largeto pass through said hood will be caught thereby and precipitated intothe flue, while the finer particles and smoke will pass through themeshes of the hood and thence to the finer screen 12 by which theremaining solid particles will be arrested and precipitated into thebottom of the drum. When it is desired to clean the drum, owing toaccumulation of material therein, the top cover including the screen 12is removed by first unscrewing the nut 17 and removing the bolt 15,after which.the latch 21 is moved to non-engaging position and the door19 allowed to swing open, whereupon a broom or the like may be employedfor sweeping the collected material through the discharge opening 18.After the drum has been cleaned, the door is again closed and the topcover applied over the up per end of the drum in the manner heretoforeexplained and as'will be readily understood.

Having thus described the invention, what I claim 1. In a sparkarrester, a drum having a flue engaging aperture in the bottom thereof,upward projecting arms adjacent to said aperture and having terminalhooks, and

downward engaging arms adjacent to said aperture, in

combination with a clamping ring engaging the downward extending arms, aflue engaging screen hood disposed within the drum exterior of theupward extending arms, and a top cover detachahly engaging the drum andincluding a screen of finer texture than the hood with the drum. 2. In aspark arr-ester, a hood having a flue engaging aperture in the bottomthereof and provided with a door and means for securing said door inclosed position, means for mounting and supporting the drum upon a flue,a flue engaging screen hood supported within the drum, and a top coverdetachahly engaging the drum and includ ing a screen of finer texturethan the hood screen within the drum. t

In testimony whereof, I afiix my signature in presence of two witnesses.

RICHARD LAMB. Witnesses:

E. '1. LAMB, JOHN T. LAMB.

